Both are booster car seats — here are their published manufacturer specs side by side.
This compares published manufacturer specs — not safety or fit advice. The seat's manual, your vehicle's manual, NHTSA's tools and a certified CPST are the fit-and-safety authority; always check them before installing.
Spec
Chicco GoFit Plus
Cosco Topside
Stage
Booster
Booster
Narrow (3-across)
–
–
Extended rear-facing
–
–
FAA-approved
–
–
Lightweight / travel
✓
✓
How they differ
both list the same documented features for the booster stage — the choice comes down to brand, price and your vehicle's fit (check both manuals)
Published limits
Mode
Chicco GoFit Plus
Cosco Topside
Booster (with back)
40–110 lb · 38–57 in · 4+ yrs
—
Booster (backless)
40–110 lb · 38–57 in · 4+ yrs
40–100 lb · 43–57 in
Useful life
—
10 yrs from manufacture
Chicco GoFit Plus: The manual states one range for the seat (40–110 lb, 38–57″, 4+) across highback and backless use. Useful life is set by a “Do Not Use After” date on the label, not a printed number of years.
Cosco Topside: Backless booster only (no high-back mode). No age requirement printed (weight/height/ear-position only). Do not use more than 10 years after the date of manufacture (printed number, per manual).
That is the record of the brand — not a verdict on these models. A recall names specific models and manufacture-date ranges, and a seat missing from the record is not "recall-free": check nhtsa.gov/recalls with the model and date of manufacture on your seat's label. Source: NHTSA, retrieved 2026-09-05.
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FAQ
What's the difference between the Chicco GoFit Plus and the Cosco Topside? The Chicco GoFit Plus is lightweight/travel; the Cosco Topside is lightweight/travel. Both are booster car seats.
Which is right for my car and child, the Chicco GoFit Plus or the Cosco Topside? That depends on your specific vehicle and child — this page compares published manufacturer specs only, not fit or safety. Check the seat manual, your vehicle manual, NHTSA's car-seat finder and ideally a certified CPST before deciding.
Citing these specs? Go ahead — published manufacturer data, last verified 2026-06-11. Copy a ready-made reference: